What is the reason for the central display screen on the Tiguan L dashboard not lighting up?
3 Answers
There are several reasons why the central display screen in a car may not light up, including power supply abnormalities and poor contact. The specific explanations are as follows: Power Supply Abnormalities: Check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. Poor Contact: Check if the wiring harness connection is secure. If there is poor contact in the wiring, promptly inspect whether there is a loose connection, which can cause the central display screen to go black. Reconnect the loose parts properly. Display Screen Damage: Check if the display screen is damaged. Replace the display screen for testing. If it returns to normal, the display screen is damaged. If the power supply is normal and the wiring harness connection is secure, check the video output signal from the motherboard.
While driving, I noticed the central display on the Tiguan L's dashboard suddenly went dark, which was quite alarming. I carefully considered the common causes: First, it might be a blown fuse—that small component protecting the circuit, which can be found and replaced in the fuse box. Second, there could be an issue with the wiring, such as a loose connector or aging wires causing poor contact, which is quite common in Volkswagen models. Alternatively, the screen itself might be faulty, possibly due to internal component failure or vibration damage. Another possibility is that the control module's software froze, requiring a car restart. I remember last time I checked, turning off the car and waiting a few minutes before restarting sometimes helped. Don’t forget to check the battery voltage, as low voltage could also be a factor. Overall, safety comes first—without the display, you can’t use navigation or see your speed, so it’s best to get it checked at a shop soon or try DIY fuse replacement first. For frequent long-distance drivers like me, regular checks are essential to avoid breakdowns at critical moments.
I've encountered the issue of the central screen blackout on the Tiguan L dashboard, which typically falls into several categories: blown fuses are the simplest problem, and you can check the fuse box and replace them yourself; wiring issues, such as loose plugs or worn and broken wires, can cause current interruptions, especially on bumpy roads; screen hardware damage should not be overlooked, such as LCD screen failure or component aging; in addition, control system failures, like overheating control modules or software bugs, require professional diagnostic tools for resetting. When I dealt with it, I started with basic troubleshooting to avoid unnecessary expenses. The Tiguan L's design has a minor flaw where frequent startups might cause issues. I recommend having technicians test the circuit during routine maintenance to prevent problems. Pay attention to the display screen while driving, as it relates to vehicle information and warning lights—safety is paramount. If you often drive at night, regular maintenance can save a lot of hassle; don't wait until major repairs are needed to regret it.
